Disclosed are a storage device, a manufacturing method thereof, and
electronic equipment including the storage device. According to an embodiment, a memory device may include a plurality of
memory cell layers sequentially stacked on a substrate, each
memory cell layer includes an array of memory cells, and the memory cells in each
memory cell layer are along the stacking direction of the memory
cell layers are substantially aligned with each other. Each memory
cell includes: a first source / drain layer, a channel layer, and a
second source / drain layer stacked in sequence, wherein the channel layer includes a
semiconductor material different from that of the first and
second source / drain
layers; and A memory
gate stack is formed around the periphery of the channel layer. The memory gates of the memory cells in the same memory
cell layer are stacked into one body. For each storage unit, its first source / drain layer is integrated with the
second source / drain layer of the corresponding storage unit in the lower layer, and its second source / drain layer is integrated with the first source / drain layer of the corresponding storage unit in the upper layer.